Twentieth century 58 History 29 Philosophy 5 United States 5 Criticism 4 Government 4 India 4 Politics 4 Biography 3 CHAMBERS TWENTIETH CENTURY DICTIONARY 3 Economics 3 International relations 3 Literature 3 Nationalism 3 Religion 3 Twentieth Century 3 Twentieth Century Dictionary 3 War 3 World politics 3 Criticism and interpretation 2 Democracy 2 English literature 2 Europe 2 Foreign relations 2 Geography 2 History, Modern 2 Islam 2 Literary criticism 2 Military history 2 Nineteenth Century 2